55532304503021 has 4 divisors (see below), whose sum is σ = 55622308238652. Its totient is φ = 55442300767392.

The previous prime is 55532304503017. The next prime is 55532304503023. The reversal of 55532304503021 is 12030540323555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10911427530025 + 44620876972996 = 3303245^2 + 6679886^2 .

It is a cyclic number.

It is not a de Polignac number, because 55532304503021 - 2² = 55532304503017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55532304503023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45001866890 + ... + 45001868123.

It is an arithmetic number, because the mean of its divisors is an integer number (13905577059663).

Almost surely, 2^{55532304503021} is an apocalyptic number.

It is an amenable number.

55532304503021 is a deficient number, since it is larger than the sum of its proper divisors (90003735631).

55532304503021 is an equidigital number, since it uses as much as digits as its factorization.

55532304503021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90003735630.

The product of its (nonzero) digits is 270000, while the sum is 38.

Adding to 55532304503021 its reverse (12030540323555), we get a palindrome (67562844826576).

The spelling of 55532304503021 in words is "fifty-five trillion, five hundred thirty-two billion, three hundred four million, five hundred three thousand, twenty-one".